doi:10.3906/bot-1309-2

IntroductionAtatürk Dam Lake, which is the biggest dam lake in Turkey with a surface area of 817 km 2 , is situated in the southeastern Anatolian region and in square C7 according to Davis' grid square system. The lake has a large drainage area, mainly within the boundaries of Adıyaman and Şanlıurfa provinces (Figure 1). The region has a Mediterranean climate according to Emberger's formula (Akman, 1999) and falls in the Irano-Turanian phytogeographical sector within the Holarctic floral kingdom. The plant cover of the dam lake basin is a mixture of Mediterranean, southeastern, and eastern vegetation. Forest areas are characterized mainly by Quercus and planted Pinus brutia populations. Some species of Salix, Populus, Platanus, and Tamarix are dominant along the river and some stream banks. Although not widespread, various species of Pistacia, Rhus, Paliurus,

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Fourteen pyronemataceous macrofungi taxa (Aleuria exigua Rifai; Cheilymenia catenipila J. Moravec; Cheilymenia vitellina (Pers.) Dennis; Geopyxis majalis (Fr.) Sacc.; Geopyxis vulcanalis (Peck) Sacc.; Humaria aurantia (Clem.) Häffner, Benkert & Krisai; Kotlabaea deformis (P. Karst.) Svrček; Pulvinula johannis Lantieri; Pyronema domesticum (Sowerby) Sacc.; Scutellinia trechispora (Berk. & Broome) Lambotte; Smardaea planchonis (Dunal ex Boud.) Korf & W.Y. Zhuang; Tricharina ochroleuca (Bres.) Eckblad; Tricharina praecox (P. Karst.) Dennis; and Trichophaeopsis bicuspis (Boud.) Korf & Erb) are given as new records for the mycobiota of Turkey from Gaziantep Province. Three of them are the first members of the genera Kotlabaea Svrček, Smardaea Svrček, and Trichophaeopsis Korf & Erb in Turkey. Related photographs and short descriptions of the taxa are provided.

IntroductionScientific studies on Turkish macromycota have a history of approximately 100 years. Such studies increased considerably in the last 20 to 30 years and checklists were prepared by Sesli and Denchev (2014). Additional contributions were also made to these checklists by Sesli

Background:Mushrooms have been valued for their nutritive content and as traditional medicines; several important medicinal properties of mushrooms have been recognized worldwide.Objective:The purpose of this study was to elucidate the cell growth inhibitory potential of four edible mushrooms; Coprinus comatus (O.F. Mull.) Pers. (Agaricaceae), Tricholoma fracticum (Britzelm.) Kreisel (Tricholomataceae), Rhizopogon luteolus Fr. and Nordholm (Rhizopogonaceae), Lentinus tigrinus (Bull.) Fr. (Polyporaceae) on hepatocellular carcinoma (HepG2) cells in conjunction with their antioxidant and antibacterial capacities.Materials and Methods:Five different extracts of edible mushrooms were obtained using water, methanol, acetone, n-hexane and chloroform as solvent systems for cytotoxic, antioxidant and antibacterial properties.Results:C. comatus showed substantial in vitro cytotoxic activity against HepG2 cell lines with all extracts especially with chloroform 50% inhibition (IC50 value of 0.086 mg/ml) and acetone (IC50 value of 0.420 mg/ml). Chloroform extract of C. comatus had maximum amount of β-carotene (25.94 μg/mg), total phenolic content (76.32 μg/mg) and lycopene (12.00 μg/mg), and n-hexane extract of L. tigrinus had maximum amount of flavonoid (3.67 μg/mg). While chloroform extract of C. comatus showed the highest 2, 2-diphenyl-1-picrylhydrazyl (DPPH) capturing activity (1.579 mg/ml), the best result for metal chelating activity was obtained from methanolic extract (0.842 mg/ml). Moreover, all tested mushrooms demonstrated antibacterial activity and n-hexane extract of L. tigrinus and acetone extracts of T. fracticum were the most active against tested microorganism.Conclusion:These results indicate that different extracts of investigated mushroom have considerable cytotoxic, antioxidant and antibacterial properties and may be utilized as a promising source of therapeutics.

This study was based on the macrofungi specimens collected from Kahramanmaraş province of Turkey between 1999-2007 and 312 taxa were identified. Including the 25 taxa, reported before, a list of 337 taxa belonging to 134 genera of 57 families have been compiled. Seven taxa are new records for the macromycota of Turkey.

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